公开(公告)号：US20070132461A1

公开(公告)日：2007-06-14

申请号：US11302923

申请日：2005-12-14

Applicant: Eric Holmquist ,  Peter Jalbert ,  Richard Versailles

Inventor： Eric Holmquist ,  Peter Jalbert ,  Richard Versailles

IPC: G01R27/04

CPC classification number: F01D17/02 ,  F01D21/003 ,  F05D2260/80 ,  G01H1/006

Abstract: A rotor blade measurement system includes a microwave source and a probe. A directional coupler is attached to the source and the probe. A detector is attached to the directional coupler. The probe directs a microwave signal toward a rotor such that during rotation the rotor blade will pass through the path of the microwave signal. As the rotor blade passes the microwave signal is reflected back to the probe. The directional coupler separates the original microwave signal and the reflected signal. The detector then determines the energy level of the reflected signal. As each rotor blade passes the microwave signal it generates a reflected signal that can be analyzed over time. From the length and shape of the waveform of the reflected signal the amount of twisting and flutter in a rotor blade can be determined.

Abstract translation: 转子叶片测量系统包括微波源和探头。 定向耦合器连接到源和探头。 检测器连接到定向耦合器。 探针将微波信号引导到转子，使得在旋转期间，转子叶片将通过微波信号的路径。 当转子叶片通过时，微波信号被反射回探头。 定向耦合器分离原始微波信号和反射信号。 然后，检测器确定反射信号的能级。 当每个转子叶片通过微波信号时，它产生可随时间分析的反射信号。 根据反射信号的波形的长度和形状，可以确定转子叶片中的扭转和颤动量。